My Sister has a giant airdale, 95 t0 105 #. Very protective of the house and yard.
I have seen it on natural point on birds , but it has never had any training.
They were bred as retrievers.
Very friendly to small children.
Need to be clipped about twice a year, no big deal.A little high strung, but with proper training I don't think this would be a problem.
She just uses it a a guard and at this it does an excellent job!